Goncalves's rant came after the mining company reported a third-quarter profit of nearly $438 million, slightly below expectations. It had revenue $741.8 million, beating analysts' forecast of $722.5 million.

Not content to blast the profession as a whole, Goncalves singled out Goldman Sachs senior analyst Matthew Korn for writing in a report on Friday that Cleveland-Cliffs had "modestly missed estimates," according to one published account.

"Matthew Korn from Goldman Sachs, you can run, but you can't hide," he said.

He then promised to touch base with Korn -- who apparently was not on the call -- at a Goldman Sachs conference, and suggested he bring along an unidentified colleague who studies commodities for protection.

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"It will be bad no matter what, but it will be a lot worse if you're alone," Goncalves said.

Cleveland-Cliffs said much of what had been written about the call had been "misinterpreted," with a spokesperson emailing that the company's CEO was largely irked at short sellers shorting his company's stock.

Goldman Sachs said in an email that the investment banking firm declined to comment.

Shares of the company ended down 43 cents, or 3.8 percent, at $11.05. Still, even after the end-of-the-week decline, the company's shares have surged more than 50 percent this year.